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[. . . ] Crestron QM-WMIC
Wall Plate Media Center Microphone Input
Wall Plate Media Center Microphone Input: QM-WMIC
Purpose
The purpose of this addendum is to provide additional information not supplied with the original QM-WMIC Operations & Installation Guide (Doc. [. . . ] Revised Suggestions for Proper Grounding of QM-WMIC · Connect the grounding wires as shown in the following diagram, to the electrical box (the electrical box must be earth grounded) or a ground wire in the electrical box.
Grounded Electrical Box
Grounding QM-WMIC to Grounded Electrical Box
24
QM-RMCRX
Y Z G SHIELD Floating
QM-WMC & QM-WMIC
Grounding Wire
OR
Addendum #1 for DOC. 6245
Wall Plate Media Center Microphone Input: QM-WMIC · 1
Wall Plate Media Center Microphone Input
·
Crestron QM-WMIC
Connect the ground wires to the Cresnet shield and connect the Cresnet shield at the QM-RMCRX to the chassis of the QM-RMCRX as shown in the following diagram. The QM-RMCRX chassis must be connected to an earth ground. In this instance, the Cresnet shield is not connected to Cresnet ground.
Electrical Box Isolated from Ground 24
Grounding QM-WMIC Using Cresnet Shield to Grounded Chassis
QM-RMCRX Y or CP2, CP2E, Z MC2E, MC2W, MP2, MP2E G
24 VDC CHASSIS TO EARTH GROUND
QM-WMC & QM-WMIC
SHIELD Grounding Wire
Line Voltage
NOTE: When the Cresnet shield is used to connect the QM-WMIC to the Cresnet ground terminal of a PRO2, PAC2, AV2, or any other 2-Series control system whose chassis is already earth grounded, the grounding wire from the control system to earth ground is unnecessary (as shown in the following diagram).
Grounding QM-WMIC Using Cresnet Shield to Grounded Chassis
Electrical Box Isolated from Ground 24
PRO2, AV2, or PAC2
Y Z G SHIELD
QM-WMC & QM-WMIC
Grounding Wire Line Power
Crestron Electronics, Inc. [. . . ] 6245 02. 04 Specifications subject to change without notice. [. . . ]
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